Announcement

Collapse
No announcement yet.

navy

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • #46
    Originally posted by ancientmariner View Post
    Their is a growing trend of industry taking the initiative and offering solutions such as the Dark Vessel Programme. It mentions in a description that ICEYE will provide info every few hours.. I think the current Europe, Mediterranean, Atlantic coverage of AIS seems OK. In Military terms getting target information occasionally isn't sufficient. We must equip ships with their own acquisition, classification, and target engagement systems. Industry with ECDIS have created a new series of problems and a large training gap to be adequately filled. As regards turning off AIS, the system could be designed to always show the ship symbol as in CODE Charlie for aircraft.
    Delete first word "Their" and replace with " There ". By the way does anybody know what exactly is being done with the Roisin. The Mandays working on her are eyewatering . It is more a half life rebuild??

    Comment


    • #47
      Were all the initial problems she had post launch rectified? I.understand there were numerous changes made to Niamh, to rectify issues encountered with Roisin. That said, on either vessel it is almost impossible to remain on the bridge wing in certain winds while in motion. The wind noise is too uncomfortable. Simple aerodynamics I think. The box shaped funnel whacks the wind horribly.

      Comment


      • #48
        https://www.thejournal.ie/le-roisin-...facebook_short

        Comment


        • #49
          Some of the comments are head bangingly stupid.

          Comment


          • #50
            Originally posted by Sparky42 View Post
            Some of the comments are head bangingly stupid.
            Par for the course on The Journal (and every other news site).Its mind numbing when people get animated over 250k which really is such a small amount of money in government terms (it'll only get you a quarter of a printer after all). And its the same format every time,

            "We need more money spent on health/welfare/houses/etc....., sure what do the army/navy/air corps do anyway? Lets disband/downsize/privatise or get the guards to do it",

            Surely we have to be one of the only countries in the world where this argument persists regarding defence?

            Comment


            • #51
              It is the Journal.

              Comment


              • #52
                Originally posted by na grohmiti View Post
                It is the Journal.
                If you need to get at the hull , pipework, and electrics then it is inevitable that cabins, bulkheads, hull lining and insulation will all have to be ripped out , and replaced in a fit out with all new materials and fittings. Virtually a new ship. All of that is consequent on hull areas having to be strengthened or cut out and replaced. When all is done I hope they carry out an Initial Stability Test to see if her start point for Stability is " as built " in the UK.

                Comment


                • #53
                  Originally posted by ancientmariner View Post
                  If you need to get at the hull , pipework, and electrics then it is inevitable that cabins, bulkheads, hull lining and insulation will all have to be ripped out , and replaced in a fit out with all new materials and fittings. Virtually a new ship. All of that is consequent on hull areas having to be strengthened or cut out and replaced. When all is done I hope they carry out an Initial Stability Test to see if her start point for Stability is " as built " in the UK.
                  I was aboard Eithne during one of her refits. Quite intimidating to see the majority of internal spaces back to the bare metal. They also took the opportunity to abrasive blast her superstructure, and in doing so, (removing 30 years worth of paint) probably got her sitting a few marks higher in the water.
                  Since Construction P51 has gained mounts for secondary armament quite high above the CG. For such a squat profile it was an interesting decision.
                  Last edited by na grohmiti; 21 January 2020, 20:48.

                  Comment


                  • #54
                    Love the line in the article " gymnasium and private accommodation "
                    Don't spit in my Bouillabaisse .

                    Comment


                    • #55
                      Originally posted by Laners View Post
                      Love the line in the article " gymnasium and private accommodation "
                      In our day read POs rec and sleeping in the emergency steering flat during harbour stations... not an impossible feat..
                      Covid 19 is not over ....it's still very real..Hand Hygiene, Social Distancing and Masks.. keep safe

                      Comment


                      • #56
                        I know when Deirdre was stripped of all her paint , after her equipment was removed during her mid life refit in 87 it was reckoned she had risen about five inches in the water.
                        Covid 19 is not over ....it's still very real..Hand Hygiene, Social Distancing and Masks.. keep safe

                        Comment


                        • #57
                          Originally posted by hptmurphy View Post
                          I know when Deirdre was stripped of all her paint , after her equipment was removed during her mid life refit in 87 it was reckoned she had risen about five inches in the water.
                          Certainly when a ship is stripped and cleaned of weed and shell , she will be a little lighter in the water, and will be faster due to reduced friction ( clean hull ).
                          The overall reason is mathematics based on waterplane area (WPA) and Tonnes per centimetre (TPC) loaded on or off in Salt Water or Freshwater. If for example the TPC for a P61 is 7.5 tonnes and she decreased her draft by 12.5cm (5 inches+/-), she would have shed 93.75 tonnes. Our ships carry only a few hundred tonnes of usable weights and mostly make their own FW and have no unpredictable changes in draft, except as you point out after drydocking and paint job.

                          Comment


                          • #58
                            Originally posted by DeV View Post
                            Already happening/happened
                            Holy God.! We live in the steppes and know nothing of the sea. In the last day a ship that was abandoned off Bermuda in 2018 gets washed up on Ballyandreen Strand near Ballycotton. It is only 70/75 metres long and maybe 1000 tonner. It was spotted last year in the Southern area of the North Atlantic on a Latitude with Africa.
                            Why wasn't it tracked by international resources, was there positional data passed to our Government and CG. What were our MPA doing. What were the NS doing with it's Complete Maritime Awareness/Complete Maritime Domain to provide situational awareness to all that need to know. While the errant vessel " ALTA" was floating around, every vessel transiting the SW approaches was in danger. Somebody knew from day one that this vessel was derelict and drifting. Imagine a 4000 passenger vessel steaming into an unlit vessel in rough seas and buried within radar clutter, or a laden tanker from Whitegate doing the same. It is at times like this we must get real and become aware of our geographic position and the responsibilities it brings.

                            Comment


                            • #59
                              Originally posted by ancientmariner View Post
                              Holy God.! We live in the steppes and know nothing of the sea. In the last day a ship that was abandoned off Bermuda in 2018 gets washed up on Ballyandreen Strand near Ballycotton. It is only 70/75 metres long and maybe 1000 tonner. It was spotted last year in the Southern area of the North Atlantic on a Latitude with Africa.
                              Why wasn't it tracked by international resources, was there positional data passed to our Government and CG. What were our MPA doing. What were the NS doing with it's Complete Maritime Awareness/Complete Maritime Domain to provide situational awareness to all that need to know. While the errant vessel " ALTA" was floating around, every vessel transiting the SW approaches was in danger. Somebody knew from day one that this vessel was derelict and drifting. Imagine a 4000 passenger vessel steaming into an unlit vessel in rough seas and buried within radar clutter, or a laden tanker from Whitegate doing the same. It is at times like this we must get real and become aware of our geographic position and the responsibilities it brings.
                              Studying Marine Traffic services it seems this strange, short range, vehicle carrier, was centred mostly around the Greek islands, although in an alter ego she did enter Weymouth Harbour. She was built in 1976 and under Greek ownership was named AVANTIS 11, she then was Named AVANTIS1, and then ALTA. In 2019 HMS Protector came across her , when the RN vessel was on passage to Antartica, but noted no sign of life and continued on. Due to ALTA's construction she could only be boarded by Helo. We are now stuck with her and we should not have been caught unawares. Get a map of known derelicts and keep it updated.

                              Comment


                              • #60
                                As discussed on another thread, it is in a particularly inaccessible spot, and may become the next Ranga or Samson. Cork coco are monitoring the situation for oil pollution.

                                Comment

                                Working...
                                X